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US 10,473,604 B2Granted
Method of determining deformation location
AssigneeGM Global Technology Operations LLC
InventorsJames R. Salvador, Debejyo Chakraborty, Leonid C. Lev
Life of this patent
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Abstract
A number of variations may involve a method that may include providing a non-conductive layer. A conductive layer may be provided overlying the non-conductive layer with the conductive layer to form a sensor device. An opposition to electrical current through the conductive layer may be monitored. The location of a status of the non-conductive layer or of the conductive layer may be determined through a change in the opposition.
Claims16
A method comprising:
- forming a substrate as part of a battery;
- providing a non-conductive layer;
- providing a conductive layer and overlying the non-conductive layer with the conductive layer to form a sensor device;
- positioning the sensor device in contact with the substrate;
- evaluating a quality of an environment within which the sensor device is disposed by monitoring an opposition to electrical current through the conductive layer;
- determining the location of a status of the non-conductive layer or of the conductive layer through a change in the opposition;
- determining whether a change in the quality of the environment has occurred by evaluating changes in the opposition to the electrical current;
- and
- indicating electrolyte decomposition of the battery by the change in quality of the environment,
- wherein the change in quality of the environment comprises expansion of the substrate.
7 more elements
A method comprising:
- forming a substrate as part of a battery;
- forming a non-conductive layer of a material that does not conduct electricity;
- positioning the non-conductive layer to monitor a potential deformation of a substrate;
- forming a conductive layer;
- overlying at least a part of the non-conductive layer with the conductive layer to form a sensor device;
- monitoring for a deformation of at least one of the non-conductive layer and the substrate;
- determining an occurrence of the deformation by monitoring for changes in opposition to current in the conductive layer indicative of factors that deform the substrate, wherein the factors comprise an electrolyte decomposition, a state of health of a battery and a state of charge of the battery;
- detecting, by the changes in opposition, a variation in chemical concentration by the deformation in response to exposure of the substrate to the variation;
- measuring a rate of the deformation;
- and
- discriminating, by comparing the rate of the deformation to known values, between the electrolyte decomposition, the state of health and the state of charge as a source of the deformation.
8 more elements
Dependencies are inferred from the claim text.